"open book decomposition" meaning in English

{
  "forms": [
    {
      "form": "open book decompositions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "open book decomposition (plural open book decompositions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Topology",
          "orig": "en:Topology",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link."
      ],
      "id": "en-open_book_decomposition-en-noun-ni~-srCK",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "topology",
          "topology"
        ],
        [
          "decomposition",
          "decomposition"
        ],
        [
          "manifold",
          "manifold"
        ],
        [
          "link",
          "link"
        ],
        [
          "fibration",
          "fibration"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "bound",
          "bound"
        ]
      ],
      "raw_glosses": [
        "(mathematics, topology) A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link."
      ],
      "synonyms": [
        {
          "word": "open book"
        }
      ],
      "topics": [
        "mathematics",
        "sciences",
        "topology"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "manifold decomposition",
          "word": "avoin kirja"
        }
      ]
    }
  ],
  "word": "open book decomposition"
}

{
  "forms": [
    {
      "form": "open book decompositions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "open book decomposition (plural open book decompositions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "en:Mathematics",
        "en:Topology"
      ],
      "glosses": [
        "A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "topology",
          "topology"
        ],
        [
          "decomposition",
          "decomposition"
        ],
        [
          "manifold",
          "manifold"
        ],
        [
          "link",
          "link"
        ],
        [
          "fibration",
          "fibration"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "bound",
          "bound"
        ]
      ],
      "raw_glosses": [
        "(mathematics, topology) A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "topology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "open book"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "manifold decomposition",
      "word": "avoin kirja"
    }
  ],
  "word": "open book decomposition"
}